Finding the Fourth Proportional to 142,061.38, 212,857.91 and 127,412.13

Step by Step Solution

1. Step 1: Write the proportion equation
   142,061.38 : 212,857.91 = 127,412.13 : x
2. Step 2: Convert to fraction form
   142,061.38/212,857.91 = 127,412.13/x
3. Step 3: Cross multiply
   142,061.38x = 212,857.91 × 127,412.13
4. Step 4: Simplify right side
   142,061.38x = 27,120,679,700.45
5. Step 5: Solve for x
   x = 27,120,679,700.45/142,061.38
6. Step 6: Final answer
   x = 190,908.18